Plurally-fused socket head



NOV- 25 L. CROSS PLURALLY FUSED SOCKET HEAD Filed Oct. 6, 1929.

IN VEN TOR A TTORNE Y PATENT OFFICEI LOUIS cross, or BROOKLYN, NEW YQRK.

PLURALLY-FUSED SOCKET HEAD.

.Appflication filed October 6, 1922. Serial No. 592,688.

To all whom it may concern: Be it known that I, LOUIS Cross, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Plurally-Fused Socket Heads, of which the following is a specification.

This invention relates to improvements in electrical devices, and more particularly to what are commonly known in the art as multiple attachment plugs.

In the installation of electrical circuits it is customary to determine the number of current consuming devices to be used in a single clrcult so as to avoid undue waste by using an oversize wire and as a result when additional devices, i; e. those not entering into the calculations prior to installation, are connected into the line, a larger volume of current enters the line so that the wires become overheated causing fires and other damage.

With the constantly increasing use of such appliances as previously IIIGIItIOIIGd, there is a like demand for more outlets with the result that multiple outlet plugs are finding a large volume of varied uses and as the current consuming devices are not fully standardized as to the current required for operation, the necessity of effectually preventing the overloading of electrical circuits becomes apparent.

It is therefore the principal object of this invention to provide means for connecting a plurality of devices such as smoothing irons, lamps, heating pads, water heaters, toasters, urns and the like to a single outlet and to provide an individual protective device.

in circuit with each indivual outlet from the plug so as to prevent overloading of the line and the damage conse uent thereto.

Another purpose is in t e provision of a separate fuse for each socket, each fuse being interchangeable and removably engaged within the body of the adapter plug in-such manner that should a short circuit or other mishap cause a blow out, the same is confined to the particular socket carrying the defective plug and not transmitted to the main line or other sockets, the continued use of which is not interrupted.

A further aim is to produce a compact, neat appearing structure, capable of extensive use and which is not readily liable to become deranged or damaged.

These and other like objects are attained by the novel construction, combination and arrangement of parts hereinafter described and shown in the accompanying drawing forming a material part of this disclosure, and in which Figure 1 is a partial side elevational, partial longitudinal sectional view showing the I interior of a plug made in accordance with the invention and indicating its application.

Figure 2 is an edge view of the plug. Figure 3 is a bottom plan view of the same, the sockets being shown as empty.

Figure 4 is a perspective view of a double conductor as used therein.

Figure 5 is a similar view of one of the return conductors.

The complete appliance, as shown in the 19 threaded to receive ordinary commercial fuse plugs 20, the same being easily engaged or removed by their knurled extending heads 21.

Adjacent the faces 11, the plug body is extended outwardly in register to provide bosses 22 having openings 23 containing metal sockets 24 of. standard type adapted to operatively receive the lamp plug 25 or one of similar nature as the plug 25 of an extension cord 26. I

It may be noted that the several sockets 24 are not parallel, it being preferable to arrange them divergently for clearance and like purposes.

The inreaching flan e at the bottom of the socket 24 is secured y screws to the body,

one of the screws 27 passing through the outturned foot 28 of a double conductor having angularly inclined elements 29 leadlet socket.

t engaging the plugs 20.

is disposed in the space 17 of the plug body,

its terminals leading to opposed sockets and its center element 31 engaged by the lower end of the conductor 16 which is riveted after passing through the opening 32, thus, in connection with the screws 27-, maintaining it in fixed position to convey current to the sockets 24 and whatever plug may be engaged .therein. 1

The center contact of an attachment plug or lamp based when properly positioned engages a reversely bent spring contact 33 formed with an angular arm 34 integral with the conductor 35, the same passing through a recess 36 formed in the body between the bottoms of the recesses 18 and 23.

These conductors 35 are held in firm relation at the bottom of the recesses 18 by screws 37 and have their opposite ends reentrantly turned to provide terminals 38 for center contacts 39 of the fuse Said fuse plugs are also in electrical engagement along their metal casings with conductors 40 passing through openings 41 in the plug extension 12 and engaging the casing 13 previously described. 1

It will thus be'seen that when the device isthreaded into a socket and one or more of the current consuming devices are connected in" the sockets of the plug, the current will flow through the central contact and thence through the conductor 16 and double conductor to the center contacts 33. Assuming that the lamp bulb is in position as illustrated, it will be seen that the current will flow through the threaded shell or socket 24 and lamp .base 25, through the -center contact of the lamp to the contact 33.

Continuing, the current will enter the center contact 39 'of the fuse plug through the conductor and passing through the. fuse plug, out through the threaded shell 19, will enter the shell 13 through conductors and return to'the out- Obviously should a. current consuming device of too high an amperage be connected to the/device, the fuse 20 will be blown out and the line protected from overheating.

Although the foregoing is descriptive of the preferred embodiment of the invention, it will be apparent that minor changes may be made in its construction, without the ex er cise of invention or conflicting with the scope ofthe claims hereto appended.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is i 1. A multiple attachment plug comprising a chambered integral insulator having opposed lateral recesses in its body and sockets in its lower end, said Sockets containing conducting linings, a conducting. casing on the upper attaching end of said plug, a fuse removably engaged in each recess said fuses having one pole in electrical engagement with said casing, a contact fixed in the attaching endof said plug, a conductor disposed in the chamber of said insulator, said conductor being engaged at its ends with the socket linings and at its centerwith said contact, and independent conductors in said body extending between said sockets and recesses in electrical engagement with the other pole of said fuses. I

2. A multiple attachment plug comprising a dielectric body having a conducting ferrule engageable in an outlet socket bipolar fuses removably engaged in lateral recesses in said body, one pole of each fuse 7 being in electrical engagement with said ferrule, said body having divergent sockets in the end opposite said ferrule, conducting linings "in said sockets, a unitary conductor engaging each lining and extending into said body, a contact in said body central of said ferrule and insulated therefrom, said contact being fixedly engaged with said conductor, and conductors in said body having re-entrantly turned ends respectivel engaging the other poles of said fuses and ing into said. sockets.

In testimony whereof I have signed my name to this application.

' LOUIS CROSS.

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